There is no consistent evidence of resistance of Atlantic salmon (Salmo salar) to amoebic gill disease (AGD), despite either a prior history of AGD, passive immunisation or active immunisation. Here, fish were bathed in amoebae antigens from either an avirulent in vitro cultured strain or wild-type Neoparamoeba pemaquidensis and challenged with gill-derived amoebae 27 days post-treatment. Neither bath treatment enhanced survival compared to a placebo treated group of fish. Similarly treatment did not influence the proportion of AGD-affected gill filaments in fish surviving the AGD challenge. It is not known if the failure of the treatments to elicit protection was mediated by a lack of an immune response or if an immune response was ineffective during the AGD challenge.

Item Type:	Refereed Article
Research Division:	Agricultural, Veterinary and Food Sciences
Research Group:	Fisheries sciences
Research Field:	Aquaculture
Objective Division:	Animal Production and Animal Primary Products
Objective Group:	Fisheries - aquaculture
Objective Field:	Fisheries - aquaculture not elsewhere classified
UTAS Author:	Morrison, RN (Dr Richard Morrison)
UTAS Author:	Nowak, BF (Professor Barbara Nowak)
ID Code:	36005
Year Published:	2005
Web of Science® Times Cited:	2
Deposited By:	TAFI - Aquaculture
Deposited On:	2005-08-01
Last Modified:	2006-04-01
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